THE HIGHWAYS Agency is reviewing its technical guidance for contractors following the problems on Fitzpatrick and Lafarge's road scheme in Hertfordshire.
The agency told Construction News it would be looking at its guidance for firms on the use of lime and cement to stabilise capping materials after delays on the £25.7 million A10 Wadesmill bypass project.
Fitzpatrick has now completed 80 per cent of the repairs on the road after having to rebuild 35 per cent of the 7 km scheme.
The job was hit in January by a sulphate reaction in the capping layer following bad weather, but the agency added that 'no additional measures are considered necessary' to protect the reconstructed road.
While the agency said this week the replacement works were 'on programme'contractors are facing a huge bill for liquidated damages for busting the August deadline.